PoSeidon, A Deep Dive Into Point of Sale Malware

There is new a malware family targeting PoS systems, infecting machines to scrape memory for credit card information and exfiltrate that data to servers, also primarily .ru TLD, for harvesting and likely resale. This new malware family, that we’ve nicknamed PoSeidon, has a few components to it, as illustrated by the diagram below

“PoSeidon,” a new strain of malicious software designed to steal credit and debit card data from hacked point-of-sale (POS) devices, has been implicated in a number of recent breaches involving companies that provide POS services primarily to restaurants, bars and hotels. The shift by the card thieves away from targeting major retailers like Target and Home Depot to attacking countless, smaller users of POS systems is giving financial institutions a run for their money as they struggle to figure out which merchants are responsible for card fraud.